Identify Slope
Is the slope in the equation Y = 9x, positive or negative?
Positive
What is the y-intercept?
y = 4x
0
Write equation:
Slope = 8; y-intercept = 6
y = 8x+6
Is (0,2) a solution to y = 4x -7?
No because 2 = 4(0) -7 is FALSE
To host a party at a local restaurant, (before Covid!), you must pay $90 to rent it and $15 per guest.
y = 15x + 90
What is the slope?
y= 3x -2
3
What is the y-intercept?
y = 3x + 12
12
Write equation:
slope = -2 ; y-intercept = 4
y = -2x +4
Is (0,2) a solution to y = 2?
Yes... 2 =2 is true
Mrs. Diaz just joined a new book club! It cost $25 to join plus $7 per book.
y = 7x + 25
What is the slope?
y = 10 +5x
5
What is the y-intercept?
y = -3x - 9
-9
Write equation:
slope = -1; y-intercept = -3
y = -x -3
Is (3, 2) on the line 2x + 4y = -2 ?
2(3)+4(2)=-2; 6+8 = -2 is FALSE - not a solution
Ms. Silverleib went to the Apple store! Dr. Souza told her she earned a new ipad! It cost $900 for the ipad plus $4 for each app she purchased.
y = 4x + 900
In this situation: Samari charges $20 per hour, to babysit, plus a $10 flat fee just for showing up! What is the slope AND is it positive or negative??
slope = 20 and is positive!
What is the y-intercept?
y = 35 - 9x
35
Write equation:
slope = 0 y-intercept =9
y= 9
True or False:
The solution to a linear equation is a point that is on the line.
True
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Are the values in the first quadrant only positive or only negative or BOTH??
ONLY POSITIVE!!
What is the slope?
y = 7
0
What is the y-intercept?
y = 2
2
Write equation:
slope = -2/3 y-intercept = -7
y = (-2/3)x -7
The equation is y = 3x + 7
What is a possible solution to this equation?
Varies-An example would be: (1, 10) as 10 = 3(1) + 7
Apples cost $0.89 per pound and grapes cost $3.99 per pound. Write an equation to represent the amount of fruit I can buy for $30.
0.89x + 3.99y = 30